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Finding the Third Proportional to 389,904 and 587,736

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Solution

The third proportional to 389,904 and 587,736 is: 885,945.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,904 : 587,736 = 587,736 : x
  2. Step 2: Convert to fraction form
    389,904/587,736 = 587,736/x
  3. Step 3: Cross multiply
    389,904x = 587,736 × 587,736
  4. Step 4: Simplify right side
    389,904x = 345,433,605,696
  5. Step 5: Solve for x
    x = 345,433,605,696/389,904
  6. Step 6: Final answer
    x = 885,945.27

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.